Desk set base



FIG. 1 is a rear perspective view of a desk set base showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereto;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a front elevational view thereof. 

The ornamental design for a desk set base, as shown and described. 